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Finding the Fourth Proportional to 1,330.40, 1,835.97 and 740.95

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Solution

The fourth proportional to 1,330.40, 1,835.97 and 740.95 is: 1,022.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.40 : 1,835.97 = 740.95 : x
  2. Step 2: Convert to fraction form
    1,330.40/1,835.97 = 740.95/x
  3. Step 3: Cross multiply
    1,330.40x = 1,835.97 × 740.95
  4. Step 4: Simplify right side
    1,330.40x = 1,360,361.97
  5. Step 5: Solve for x
    x = 1,360,361.97/1,330.40
  6. Step 6: Final answer
    x = 1,022.52

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1.5x scale

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.