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Finding the Fourth Proportional to 988.61, 1,483.10 and 295.26

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Solution

The fourth proportional to 988.61, 1,483.10 and 295.26 is: 442.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.61 : 1,483.10 = 295.26 : x
  2. Step 2: Convert to fraction form
    988.61/1,483.10 = 295.26/x
  3. Step 3: Cross multiply
    988.61x = 1,483.10 × 295.26
  4. Step 4: Simplify right side
    988.61x = 437,901.21
  5. Step 5: Solve for x
    x = 437,901.21/988.61
  6. Step 6: Final answer
    x = 442.95

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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.