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Finding the Fourth Proportional to 504.69, 696.63 and 308.13

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Solution

The fourth proportional to 504.69, 696.63 and 308.13 is: 425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.69 : 696.63 = 308.13 : x
  2. Step 2: Convert to fraction form
    504.69/696.63 = 308.13/x
  3. Step 3: Cross multiply
    504.69x = 696.63 × 308.13
  4. Step 4: Simplify right side
    504.69x = 214,652.60
  5. Step 5: Solve for x
    x = 214,652.60/504.69
  6. Step 6: Final answer
    x = 425.32

Related Problems

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Double scale
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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.