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Finding the Fourth Proportional to 784.46, 1,174.66 and 707.92

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Solution

The fourth proportional to 784.46, 1,174.66 and 707.92 is: 1,060.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    784.46 : 1,174.66 = 707.92 : x
  2. Step 2: Convert to fraction form
    784.46/1,174.66 = 707.92/x
  3. Step 3: Cross multiply
    784.46x = 1,174.66 × 707.92
  4. Step 4: Simplify right side
    784.46x = 831,565.31
  5. Step 5: Solve for x
    x = 831,565.31/784.46
  6. Step 6: Final answer
    x = 1,060.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.