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Finding the Fourth Proportional to 1,048.55, 1,571.36 and 560.61

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Solution

The fourth proportional to 1,048.55, 1,571.36 and 560.61 is: 840.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.55 : 1,571.36 = 560.61 : x
  2. Step 2: Convert to fraction form
    1,048.55/1,571.36 = 560.61/x
  3. Step 3: Cross multiply
    1,048.55x = 1,571.36 × 560.61
  4. Step 4: Simplify right side
    1,048.55x = 880,917.33
  5. Step 5: Solve for x
    x = 880,917.33/1,048.55
  6. Step 6: Final answer
    x = 840.13

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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.