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Finding the Fourth Proportional to 977.15, 1,469.24 and 893.27

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Solution

The fourth proportional to 977.15, 1,469.24 and 893.27 is: 1,343.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    977.15 : 1,469.24 = 893.27 : x
  2. Step 2: Convert to fraction form
    977.15/1,469.24 = 893.27/x
  3. Step 3: Cross multiply
    977.15x = 1,469.24 × 893.27
  4. Step 4: Simplify right side
    977.15x = 1,312,416.20
  5. Step 5: Solve for x
    x = 1,312,416.20/977.15
  6. Step 6: Final answer
    x = 1,343.11

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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.