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Finding the Fourth Proportional to 655.47, 901.98 and 651.42

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Solution

The fourth proportional to 655.47, 901.98 and 651.42 is: 896.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.47 : 901.98 = 651.42 : x
  2. Step 2: Convert to fraction form
    655.47/901.98 = 651.42/x
  3. Step 3: Cross multiply
    655.47x = 901.98 × 651.42
  4. Step 4: Simplify right side
    655.47x = 587,564.55
  5. Step 5: Solve for x
    x = 587,564.55/655.47
  6. Step 6: Final answer
    x = 896.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.