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Finding the Fourth Proportional to 1,053.57, 1,580.55 and 360.20

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Solution

The fourth proportional to 1,053.57, 1,580.55 and 360.20 is: 540.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.57 : 1,580.55 = 360.20 : x
  2. Step 2: Convert to fraction form
    1,053.57/1,580.55 = 360.20/x
  3. Step 3: Cross multiply
    1,053.57x = 1,580.55 × 360.20
  4. Step 4: Simplify right side
    1,053.57x = 569,314.11
  5. Step 5: Solve for x
    x = 569,314.11/1,053.57
  6. Step 6: Final answer
    x = 540.37

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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.