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Finding the Fourth Proportional to 1,240.15, 1,860.24 and 374.47

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Solution

The fourth proportional to 1,240.15, 1,860.24 and 374.47 is: 561.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.15 : 1,860.24 = 374.47 : x
  2. Step 2: Convert to fraction form
    1,240.15/1,860.24 = 374.47/x
  3. Step 3: Cross multiply
    1,240.15x = 1,860.24 × 374.47
  4. Step 4: Simplify right side
    1,240.15x = 696,604.07
  5. Step 5: Solve for x
    x = 696,604.07/1,240.15
  6. Step 6: Final answer
    x = 561.71

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1.5x scale

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.