Home / 1,113.13-1,669.66-291.40

Finding the Fourth Proportional to 1,113.13, 1,669.66 and 291.40

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Solution

The fourth proportional to 1,113.13, 1,669.66 and 291.40 is: 437.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.13 : 1,669.66 = 291.40 : x
  2. Step 2: Convert to fraction form
    1,113.13/1,669.66 = 291.40/x
  3. Step 3: Cross multiply
    1,113.13x = 1,669.66 × 291.40
  4. Step 4: Simplify right side
    1,113.13x = 486,534.02
  5. Step 5: Solve for x
    x = 486,534.02/1,113.13
  6. Step 6: Final answer
    x = 437.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.