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Finding the Fourth Proportional to 901.82, 1,245.04 and 716.06

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Solution

The fourth proportional to 901.82, 1,245.04 and 716.06 is: 988.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.82 : 1,245.04 = 716.06 : x
  2. Step 2: Convert to fraction form
    901.82/1,245.04 = 716.06/x
  3. Step 3: Cross multiply
    901.82x = 1,245.04 × 716.06
  4. Step 4: Simplify right side
    901.82x = 891,523.34
  5. Step 5: Solve for x
    x = 891,523.34/901.82
  6. Step 6: Final answer
    x = 988.58

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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.