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Finding the Fourth Proportional to 632.93, 873.43 and 353.19

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Solution

The fourth proportional to 632.93, 873.43 and 353.19 is: 487.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.93 : 873.43 = 353.19 : x
  2. Step 2: Convert to fraction form
    632.93/873.43 = 353.19/x
  3. Step 3: Cross multiply
    632.93x = 873.43 × 353.19
  4. Step 4: Simplify right side
    632.93x = 308,486.74
  5. Step 5: Solve for x
    x = 308,486.74/632.93
  6. Step 6: Final answer
    x = 487.39

Related Problems

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Double scale
Find fourth proportional to 633.93, 874.81 and 354.19
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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.