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Finding the Fourth Proportional to 1,651.47, 2,477.20 and 555.74

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Solution

The fourth proportional to 1,651.47, 2,477.20 and 555.74 is: 833.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.47 : 2,477.20 = 555.74 : x
  2. Step 2: Convert to fraction form
    1,651.47/2,477.20 = 555.74/x
  3. Step 3: Cross multiply
    1,651.47x = 2,477.20 × 555.74
  4. Step 4: Simplify right side
    1,651.47x = 1,376,675.68
  5. Step 5: Solve for x
    x = 1,376,675.68/1,651.47
  6. Step 6: Final answer
    x = 833.61

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Double scale
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Similar ratio
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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.