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Finding the Fourth Proportional to 1,053.49, 1,580.25 and 505.55

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Solution

The fourth proportional to 1,053.49, 1,580.25 and 505.55 is: 758.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.49 : 1,580.25 = 505.55 : x
  2. Step 2: Convert to fraction form
    1,053.49/1,580.25 = 505.55/x
  3. Step 3: Cross multiply
    1,053.49x = 1,580.25 × 505.55
  4. Step 4: Simplify right side
    1,053.49x = 798,895.39
  5. Step 5: Solve for x
    x = 798,895.39/1,053.49
  6. Step 6: Final answer
    x = 758.33

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Half scale
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Double scale
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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.