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Finding the Fourth Proportional to 741.46, 1,113.35 and 708.60

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Solution

The fourth proportional to 741.46, 1,113.35 and 708.60 is: 1,064.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.46 : 1,113.35 = 708.60 : x
  2. Step 2: Convert to fraction form
    741.46/1,113.35 = 708.60/x
  3. Step 3: Cross multiply
    741.46x = 1,113.35 × 708.60
  4. Step 4: Simplify right side
    741.46x = 788,910.70
  5. Step 5: Solve for x
    x = 788,910.70/741.46
  6. Step 6: Final answer
    x = 1,064.00

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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.