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Finding the Fourth Proportional to 886.19, 1,222.85 and 493.14

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Solution

The fourth proportional to 886.19, 1,222.85 and 493.14 is: 680.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.19 : 1,222.85 = 493.14 : x
  2. Step 2: Convert to fraction form
    886.19/1,222.85 = 493.14/x
  3. Step 3: Cross multiply
    886.19x = 1,222.85 × 493.14
  4. Step 4: Simplify right side
    886.19x = 603,036.25
  5. Step 5: Solve for x
    x = 603,036.25/886.19
  6. Step 6: Final answer
    x = 680.48

Related Problems

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Half scale
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Double scale
Find fourth proportional to 887.19, 1,224.23 and 494.14
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.