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Finding the Fourth Proportional to 1,053.95, 1,580.54 and 360.43

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Solution

The fourth proportional to 1,053.95, 1,580.54 and 360.43 is: 540.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.95 : 1,580.54 = 360.43 : x
  2. Step 2: Convert to fraction form
    1,053.95/1,580.54 = 360.43/x
  3. Step 3: Cross multiply
    1,053.95x = 1,580.54 × 360.43
  4. Step 4: Simplify right side
    1,053.95x = 569,674.03
  5. Step 5: Solve for x
    x = 569,674.03/1,053.95
  6. Step 6: Final answer
    x = 540.51

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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.