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Finding the Fourth Proportional to 884.66, 1,320.98 and 699.98

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Solution

The fourth proportional to 884.66, 1,320.98 and 699.98 is: 1,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.66 : 1,320.98 = 699.98 : x
  2. Step 2: Convert to fraction form
    884.66/1,320.98 = 699.98/x
  3. Step 3: Cross multiply
    884.66x = 1,320.98 × 699.98
  4. Step 4: Simplify right side
    884.66x = 924,649.48
  5. Step 5: Solve for x
    x = 924,649.48/884.66
  6. Step 6: Final answer
    x = 1,045.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.