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Finding the Fourth Proportional to 472.68, 652.10 and 317.48

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Solution

The fourth proportional to 472.68, 652.10 and 317.48 is: 437.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.68 : 652.10 = 317.48 : x
  2. Step 2: Convert to fraction form
    472.68/652.10 = 317.48/x
  3. Step 3: Cross multiply
    472.68x = 652.10 × 317.48
  4. Step 4: Simplify right side
    472.68x = 207,028.71
  5. Step 5: Solve for x
    x = 207,028.71/472.68
  6. Step 6: Final answer
    x = 437.99

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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.