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Finding the Fourth Proportional to 707.10, 1,061.58 and 544.92

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Solution

The fourth proportional to 707.10, 1,061.58 and 544.92 is: 818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.10 : 1,061.58 = 544.92 : x
  2. Step 2: Convert to fraction form
    707.10/1,061.58 = 544.92/x
  3. Step 3: Cross multiply
    707.10x = 1,061.58 × 544.92
  4. Step 4: Simplify right side
    707.10x = 578,476.17
  5. Step 5: Solve for x
    x = 578,476.17/707.10
  6. Step 6: Final answer
    x = 818.10

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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.