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Finding the Fourth Proportional to 975.71, 1,456.61 and 941.53

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Solution

The fourth proportional to 975.71, 1,456.61 and 941.53 is: 1,405.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.71 : 1,456.61 = 941.53 : x
  2. Step 2: Convert to fraction form
    975.71/1,456.61 = 941.53/x
  3. Step 3: Cross multiply
    975.71x = 1,456.61 × 941.53
  4. Step 4: Simplify right side
    975.71x = 1,371,442.01
  5. Step 5: Solve for x
    x = 1,371,442.01/975.71
  6. Step 6: Final answer
    x = 1,405.58

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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.