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Finding the Fourth Proportional to 1,382.10, 2,073.10 and 560.35

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Solution

The fourth proportional to 1,382.10, 2,073.10 and 560.35 is: 840.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.10 : 2,073.10 = 560.35 : x
  2. Step 2: Convert to fraction form
    1,382.10/2,073.10 = 560.35/x
  3. Step 3: Cross multiply
    1,382.10x = 2,073.10 × 560.35
  4. Step 4: Simplify right side
    1,382.10x = 1,161,661.59
  5. Step 5: Solve for x
    x = 1,161,661.59/1,382.10
  6. Step 6: Final answer
    x = 840.50

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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.