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Finding the Fourth Proportional to 646.74, 972.63 and 525.24

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Solution

The fourth proportional to 646.74, 972.63 and 525.24 is: 789.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.74 : 972.63 = 525.24 : x
  2. Step 2: Convert to fraction form
    646.74/972.63 = 525.24/x
  3. Step 3: Cross multiply
    646.74x = 972.63 × 525.24
  4. Step 4: Simplify right side
    646.74x = 510,864.18
  5. Step 5: Solve for x
    x = 510,864.18/646.74
  6. Step 6: Final answer
    x = 789.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.