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Finding the Fourth Proportional to 508.32, 760.86 and 315

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Solution

The fourth proportional to 508.32, 760.86 and 315 is: 471.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.32 : 760.86 = 315 : x
  2. Step 2: Convert to fraction form
    508.32/760.86 = 315/x
  3. Step 3: Cross multiply
    508.32x = 760.86 × 315
  4. Step 4: Simplify right side
    508.32x = 239,670.90
  5. Step 5: Solve for x
    x = 239,670.90/508.32
  6. Step 6: Final answer
    x = 471.50

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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.