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Finding the Fourth Proportional to 1,442.60, 2,165.52 and 577.52

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Solution

The fourth proportional to 1,442.60, 2,165.52 and 577.52 is: 866.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.60 : 2,165.52 = 577.52 : x
  2. Step 2: Convert to fraction form
    1,442.60/2,165.52 = 577.52/x
  3. Step 3: Cross multiply
    1,442.60x = 2,165.52 × 577.52
  4. Step 4: Simplify right side
    1,442.60x = 1,250,631.11
  5. Step 5: Solve for x
    x = 1,250,631.11/1,442.60
  6. Step 6: Final answer
    x = 866.93

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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.