Home / 1,275.59-1,913.42-351.15

Finding the Fourth Proportional to 1,275.59, 1,913.42 and 351.15

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Solution

The fourth proportional to 1,275.59, 1,913.42 and 351.15 is: 526.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.59 : 1,913.42 = 351.15 : x
  2. Step 2: Convert to fraction form
    1,275.59/1,913.42 = 351.15/x
  3. Step 3: Cross multiply
    1,275.59x = 1,913.42 × 351.15
  4. Step 4: Simplify right side
    1,275.59x = 671,895.68
  5. Step 5: Solve for x
    x = 671,895.68/1,275.59
  6. Step 6: Final answer
    x = 526.74

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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.