Home / 1,151.11-1,588.37-653.69

Finding the Fourth Proportional to 1,151.11, 1,588.37 and 653.69

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Solution

The fourth proportional to 1,151.11, 1,588.37 and 653.69 is: 901.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.11 : 1,588.37 = 653.69 : x
  2. Step 2: Convert to fraction form
    1,151.11/1,588.37 = 653.69/x
  3. Step 3: Cross multiply
    1,151.11x = 1,588.37 × 653.69
  4. Step 4: Simplify right side
    1,151.11x = 1,038,293.64
  5. Step 5: Solve for x
    x = 1,038,293.64/1,151.11
  6. Step 6: Final answer
    x = 901.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.