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Finding the Fourth Proportional to 1,240.05, 1,860.07 and 374.36

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Solution

The fourth proportional to 1,240.05, 1,860.07 and 374.36 is: 561.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.05 : 1,860.07 = 374.36 : x
  2. Step 2: Convert to fraction form
    1,240.05/1,860.07 = 374.36/x
  3. Step 3: Cross multiply
    1,240.05x = 1,860.07 × 374.36
  4. Step 4: Simplify right side
    1,240.05x = 696,335.81
  5. Step 5: Solve for x
    x = 696,335.81/1,240.05
  6. Step 6: Final answer
    x = 561.54

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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.