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Finding the Fourth Proportional to 1,005.48, 1,500.48 and 896.40

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Solution

The fourth proportional to 1,005.48, 1,500.48 and 896.40 is: 1,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005.48 : 1,500.48 = 896.40 : x
  2. Step 2: Convert to fraction form
    1,005.48/1,500.48 = 896.40/x
  3. Step 3: Cross multiply
    1,005.48x = 1,500.48 × 896.40
  4. Step 4: Simplify right side
    1,005.48x = 1,345,030.27
  5. Step 5: Solve for x
    x = 1,345,030.27/1,005.48
  6. Step 6: Final answer
    x = 1,337.70

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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.