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Finding the Fourth Proportional to 716.42, 1,075.16 and 573.86

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Solution

The fourth proportional to 716.42, 1,075.16 and 573.86 is: 861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.42 : 1,075.16 = 573.86 : x
  2. Step 2: Convert to fraction form
    716.42/1,075.16 = 573.86/x
  3. Step 3: Cross multiply
    716.42x = 1,075.16 × 573.86
  4. Step 4: Simplify right side
    716.42x = 616,987.38
  5. Step 5: Solve for x
    x = 616,987.38/716.42
  6. Step 6: Final answer
    x = 861.22

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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.