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Finding the Fourth Proportional to 947.68, 1,307.34 and 616.16

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Solution

The fourth proportional to 947.68, 1,307.34 and 616.16 is: 850.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    947.68 : 1,307.34 = 616.16 : x
  2. Step 2: Convert to fraction form
    947.68/1,307.34 = 616.16/x
  3. Step 3: Cross multiply
    947.68x = 1,307.34 × 616.16
  4. Step 4: Simplify right side
    947.68x = 805,530.61
  5. Step 5: Solve for x
    x = 805,530.61/947.68
  6. Step 6: Final answer
    x = 850.00

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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.