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Finding the Fourth Proportional to 1,043.85, 1,567.86 and 654.55

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Solution

The fourth proportional to 1,043.85, 1,567.86 and 654.55 is: 983.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.85 : 1,567.86 = 654.55 : x
  2. Step 2: Convert to fraction form
    1,043.85/1,567.86 = 654.55/x
  3. Step 3: Cross multiply
    1,043.85x = 1,567.86 × 654.55
  4. Step 4: Simplify right side
    1,043.85x = 1,026,236.39
  5. Step 5: Solve for x
    x = 1,026,236.39/1,043.85
  6. Step 6: Final answer
    x = 983.12

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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.