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Finding the Fourth Proportional to 657.90, 988.02 and 568.08

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Solution

The fourth proportional to 657.90, 988.02 and 568.08 is: 853.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.90 : 988.02 = 568.08 : x
  2. Step 2: Convert to fraction form
    657.90/988.02 = 568.08/x
  3. Step 3: Cross multiply
    657.90x = 988.02 × 568.08
  4. Step 4: Simplify right side
    657.90x = 561,274.40
  5. Step 5: Solve for x
    x = 561,274.40/657.90
  6. Step 6: Final answer
    x = 853.13

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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.