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Finding the Fourth Proportional to 1,793.15, 2,689.55 and 560.51

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Solution

The fourth proportional to 1,793.15, 2,689.55 and 560.51 is: 840.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,793.15 : 2,689.55 = 560.51 : x
  2. Step 2: Convert to fraction form
    1,793.15/2,689.55 = 560.51/x
  3. Step 3: Cross multiply
    1,793.15x = 2,689.55 × 560.51
  4. Step 4: Simplify right side
    1,793.15x = 1,507,503.42
  5. Step 5: Solve for x
    x = 1,507,503.42/1,793.15
  6. Step 6: Final answer
    x = 840.70

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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.