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Finding the Fourth Proportional to 1,330.06, 1,835.49 and 740.65

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Solution

The fourth proportional to 1,330.06, 1,835.49 and 740.65 is: 1,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.06 : 1,835.49 = 740.65 : x
  2. Step 2: Convert to fraction form
    1,330.06/1,835.49 = 740.65/x
  3. Step 3: Cross multiply
    1,330.06x = 1,835.49 × 740.65
  4. Step 4: Simplify right side
    1,330.06x = 1,359,455.67
  5. Step 5: Solve for x
    x = 1,359,455.67/1,330.06
  6. Step 6: Final answer
    x = 1,022.10

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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.