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Finding the Fourth Proportional to 707.90, 1,060.94 and 571.02

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Solution

The fourth proportional to 707.90, 1,060.94 and 571.02 is: 855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.90 : 1,060.94 = 571.02 : x
  2. Step 2: Convert to fraction form
    707.90/1,060.94 = 571.02/x
  3. Step 3: Cross multiply
    707.90x = 1,060.94 × 571.02
  4. Step 4: Simplify right side
    707.90x = 605,817.96
  5. Step 5: Solve for x
    x = 605,817.96/707.90
  6. Step 6: Final answer
    x = 855.80

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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.