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Finding the Fourth Proportional to 848.59, 1,271.86 and 616.91

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Solution

The fourth proportional to 848.59, 1,271.86 and 616.91 is: 924.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.59 : 1,271.86 = 616.91 : x
  2. Step 2: Convert to fraction form
    848.59/1,271.86 = 616.91/x
  3. Step 3: Cross multiply
    848.59x = 1,271.86 × 616.91
  4. Step 4: Simplify right side
    848.59x = 784,615.25
  5. Step 5: Solve for x
    x = 784,615.25/848.59
  6. Step 6: Final answer
    x = 924.61

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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.