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Finding the Fourth Proportional to 901.58, 1,245.51 and 714.47

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Solution

The fourth proportional to 901.58, 1,245.51 and 714.47 is: 987.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.58 : 1,245.51 = 714.47 : x
  2. Step 2: Convert to fraction form
    901.58/1,245.51 = 714.47/x
  3. Step 3: Cross multiply
    901.58x = 1,245.51 × 714.47
  4. Step 4: Simplify right side
    901.58x = 889,873.30
  5. Step 5: Solve for x
    x = 889,873.30/901.58
  6. Step 6: Final answer
    x = 987.02

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Double scale
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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.