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Finding the Fourth Proportional to 1,590.26, 2,385.39 and 725.54

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Solution

The fourth proportional to 1,590.26, 2,385.39 and 725.54 is: 1,088.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.26 : 2,385.39 = 725.54 : x
  2. Step 2: Convert to fraction form
    1,590.26/2,385.39 = 725.54/x
  3. Step 3: Cross multiply
    1,590.26x = 2,385.39 × 725.54
  4. Step 4: Simplify right side
    1,590.26x = 1,730,695.86
  5. Step 5: Solve for x
    x = 1,730,695.86/1,590.26
  6. Step 6: Final answer
    x = 1,088.31

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1.5x scale

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.