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Finding the Fourth Proportional to 317.59, 474.33 and 315.52

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Solution

The fourth proportional to 317.59, 474.33 and 315.52 is: 471.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.59 : 474.33 = 315.52 : x
  2. Step 2: Convert to fraction form
    317.59/474.33 = 315.52/x
  3. Step 3: Cross multiply
    317.59x = 474.33 × 315.52
  4. Step 4: Simplify right side
    317.59x = 149,660.60
  5. Step 5: Solve for x
    x = 149,660.60/317.59
  6. Step 6: Final answer
    x = 471.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.