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Finding the Fourth Proportional to 2,294.64, 3,442.80 and 907.20

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Solution

The fourth proportional to 2,294.64, 3,442.80 and 907.20 is: 1,361.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,294.64 : 3,442.80 = 907.20 : x
  2. Step 2: Convert to fraction form
    2,294.64/3,442.80 = 907.20/x
  3. Step 3: Cross multiply
    2,294.64x = 3,442.80 × 907.20
  4. Step 4: Simplify right side
    2,294.64x = 3,123,308.16
  5. Step 5: Solve for x
    x = 3,123,308.16/2,294.64
  6. Step 6: Final answer
    x = 1,361.13

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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.