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Finding the Fourth Proportional to 885.47, 1,326.93 and 652.52

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Solution

The fourth proportional to 885.47, 1,326.93 and 652.52 is: 977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.47 : 1,326.93 = 652.52 : x
  2. Step 2: Convert to fraction form
    885.47/1,326.93 = 652.52/x
  3. Step 3: Cross multiply
    885.47x = 1,326.93 × 652.52
  4. Step 4: Simplify right side
    885.47x = 865,841.73
  5. Step 5: Solve for x
    x = 865,841.73/885.47
  6. Step 6: Final answer
    x = 977.84

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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.