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Finding the Fourth Proportional to 988.36, 1,482.59 and 577.27

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Solution

The fourth proportional to 988.36, 1,482.59 and 577.27 is: 865.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.36 : 1,482.59 = 577.27 : x
  2. Step 2: Convert to fraction form
    988.36/1,482.59 = 577.27/x
  3. Step 3: Cross multiply
    988.36x = 1,482.59 × 577.27
  4. Step 4: Simplify right side
    988.36x = 855,854.73
  5. Step 5: Solve for x
    x = 855,854.73/988.36
  6. Step 6: Final answer
    x = 865.93

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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.