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Finding the Fourth Proportional to 1,053.77, 1,580.90 and 498.85

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Solution

The fourth proportional to 1,053.77, 1,580.90 and 498.85 is: 748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.77 : 1,580.90 = 498.85 : x
  2. Step 2: Convert to fraction form
    1,053.77/1,580.90 = 498.85/x
  3. Step 3: Cross multiply
    1,053.77x = 1,580.90 × 498.85
  4. Step 4: Simplify right side
    1,053.77x = 788,638.21
  5. Step 5: Solve for x
    x = 788,638.21/1,053.77
  6. Step 6: Final answer
    x = 748.40

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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.