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Finding the Fourth Proportional to 977.22, 1,465.90 and 283.89

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Solution

The fourth proportional to 977.22, 1,465.90 and 283.89 is: 425.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    977.22 : 1,465.90 = 283.89 : x
  2. Step 2: Convert to fraction form
    977.22/1,465.90 = 283.89/x
  3. Step 3: Cross multiply
    977.22x = 1,465.90 × 283.89
  4. Step 4: Simplify right side
    977.22x = 416,159.14
  5. Step 5: Solve for x
    x = 416,159.14/977.22
  6. Step 6: Final answer
    x = 425.86

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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.