Home / 1,088.40-1,631.67-357.78

Finding the Fourth Proportional to 1,088.40, 1,631.67 and 357.78

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Solution

The fourth proportional to 1,088.40, 1,631.67 and 357.78 is: 536.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.40 : 1,631.67 = 357.78 : x
  2. Step 2: Convert to fraction form
    1,088.40/1,631.67 = 357.78/x
  3. Step 3: Cross multiply
    1,088.40x = 1,631.67 × 357.78
  4. Step 4: Simplify right side
    1,088.40x = 583,778.89
  5. Step 5: Solve for x
    x = 583,778.89/1,088.40
  6. Step 6: Final answer
    x = 536.36

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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.