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Finding the Fourth Proportional to 314.90, 471.72 and 237.95

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Solution

The fourth proportional to 314.90, 471.72 and 237.95 is: 356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.90 : 471.72 = 237.95 : x
  2. Step 2: Convert to fraction form
    314.90/471.72 = 237.95/x
  3. Step 3: Cross multiply
    314.90x = 471.72 × 237.95
  4. Step 4: Simplify right side
    314.90x = 112,245.77
  5. Step 5: Solve for x
    x = 112,245.77/314.90
  6. Step 6: Final answer
    x = 356.45

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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.