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Finding the Fourth Proportional to 897.77, 1,347.60 and 487.73

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Solution

The fourth proportional to 897.77, 1,347.60 and 487.73 is: 732.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.77 : 1,347.60 = 487.73 : x
  2. Step 2: Convert to fraction form
    897.77/1,347.60 = 487.73/x
  3. Step 3: Cross multiply
    897.77x = 1,347.60 × 487.73
  4. Step 4: Simplify right side
    897.77x = 657,264.95
  5. Step 5: Solve for x
    x = 657,264.95/897.77
  6. Step 6: Final answer
    x = 732.11

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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.