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Finding the Fourth Proportional to 472.33, 707.23 and 307.31

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Solution

The fourth proportional to 472.33, 707.23 and 307.31 is: 460.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.33 : 707.23 = 307.31 : x
  2. Step 2: Convert to fraction form
    472.33/707.23 = 307.31/x
  3. Step 3: Cross multiply
    472.33x = 707.23 × 307.31
  4. Step 4: Simplify right side
    472.33x = 217,333.78
  5. Step 5: Solve for x
    x = 217,333.78/472.33
  6. Step 6: Final answer
    x = 460.13

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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.