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Finding the Fourth Proportional to 947.36, 1,307.74 and 616.07

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Solution

The fourth proportional to 947.36, 1,307.74 and 616.07 is: 850.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    947.36 : 1,307.74 = 616.07 : x
  2. Step 2: Convert to fraction form
    947.36/1,307.74 = 616.07/x
  3. Step 3: Cross multiply
    947.36x = 1,307.74 × 616.07
  4. Step 4: Simplify right side
    947.36x = 805,659.38
  5. Step 5: Solve for x
    x = 805,659.38/947.36
  6. Step 6: Final answer
    x = 850.43

Related Problems

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Half scale
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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.