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Finding the Fourth Proportional to 531.69, 733.70 and 307.64

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Solution

The fourth proportional to 531.69, 733.70 and 307.64 is: 424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.69 : 733.70 = 307.64 : x
  2. Step 2: Convert to fraction form
    531.69/733.70 = 307.64/x
  3. Step 3: Cross multiply
    531.69x = 733.70 × 307.64
  4. Step 4: Simplify right side
    531.69x = 225,710.26
  5. Step 5: Solve for x
    x = 225,710.26/531.69
  6. Step 6: Final answer
    x = 424.51

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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.