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Finding the Fourth Proportional to 517.96, 777.40 and 373.76

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Solution

The fourth proportional to 517.96, 777.40 and 373.76 is: 560.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.96 : 777.40 = 373.76 : x
  2. Step 2: Convert to fraction form
    517.96/777.40 = 373.76/x
  3. Step 3: Cross multiply
    517.96x = 777.40 × 373.76
  4. Step 4: Simplify right side
    517.96x = 290,561.02
  5. Step 5: Solve for x
    x = 290,561.02/517.96
  6. Step 6: Final answer
    x = 560.97

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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.