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Finding the Fourth Proportional to 1,041.48, 1,438.08 and 833.40

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Solution

The fourth proportional to 1,041.48, 1,438.08 and 833.40 is: 1,150.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.48 : 1,438.08 = 833.40 : x
  2. Step 2: Convert to fraction form
    1,041.48/1,438.08 = 833.40/x
  3. Step 3: Cross multiply
    1,041.48x = 1,438.08 × 833.40
  4. Step 4: Simplify right side
    1,041.48x = 1,198,495.87
  5. Step 5: Solve for x
    x = 1,198,495.87/1,041.48
  6. Step 6: Final answer
    x = 1,150.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.