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Finding the Fourth Proportional to 501.88, 753.28 and 317.36

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Solution

The fourth proportional to 501.88, 753.28 and 317.36 is: 476.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.88 : 753.28 = 317.36 : x
  2. Step 2: Convert to fraction form
    501.88/753.28 = 317.36/x
  3. Step 3: Cross multiply
    501.88x = 753.28 × 317.36
  4. Step 4: Simplify right side
    501.88x = 239,060.94
  5. Step 5: Solve for x
    x = 239,060.94/501.88
  6. Step 6: Final answer
    x = 476.33

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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.