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Finding the Fourth Proportional to 885.07, 1,221.15 and 737.47

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Solution

The fourth proportional to 885.07, 1,221.15 and 737.47 is: 1,017.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.07 : 1,221.15 = 737.47 : x
  2. Step 2: Convert to fraction form
    885.07/1,221.15 = 737.47/x
  3. Step 3: Cross multiply
    885.07x = 1,221.15 × 737.47
  4. Step 4: Simplify right side
    885.07x = 900,561.49
  5. Step 5: Solve for x
    x = 900,561.49/885.07
  6. Step 6: Final answer
    x = 1,017.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.