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Finding the Fourth Proportional to 507.84, 761.04 and 314.88

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Solution

The fourth proportional to 507.84, 761.04 and 314.88 is: 471.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.84 : 761.04 = 314.88 : x
  2. Step 2: Convert to fraction form
    507.84/761.04 = 314.88/x
  3. Step 3: Cross multiply
    507.84x = 761.04 × 314.88
  4. Step 4: Simplify right side
    507.84x = 239,636.28
  5. Step 5: Solve for x
    x = 239,636.28/507.84
  6. Step 6: Final answer
    x = 471.87

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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.