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Finding the Fourth Proportional to 844.52, 1,164.86 and 647.70

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Solution

The fourth proportional to 844.52, 1,164.86 and 647.70 is: 893.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.52 : 1,164.86 = 647.70 : x
  2. Step 2: Convert to fraction form
    844.52/1,164.86 = 647.70/x
  3. Step 3: Cross multiply
    844.52x = 1,164.86 × 647.70
  4. Step 4: Simplify right side
    844.52x = 754,479.82
  5. Step 5: Solve for x
    x = 754,479.82/844.52
  6. Step 6: Final answer
    x = 893.38

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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.