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Finding the Fourth Proportional to 713.08, 981.63 and 618.52

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Solution

The fourth proportional to 713.08, 981.63 and 618.52 is: 851.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.08 : 981.63 = 618.52 : x
  2. Step 2: Convert to fraction form
    713.08/981.63 = 618.52/x
  3. Step 3: Cross multiply
    713.08x = 981.63 × 618.52
  4. Step 4: Simplify right side
    713.08x = 607,157.79
  5. Step 5: Solve for x
    x = 607,157.79/713.08
  6. Step 6: Final answer
    x = 851.46

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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.