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Finding the Fourth Proportional to 1,160.17, 1,603.13 and 828.02

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Solution

The fourth proportional to 1,160.17, 1,603.13 and 828.02 is: 1,144.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160.17 : 1,603.13 = 828.02 : x
  2. Step 2: Convert to fraction form
    1,160.17/1,603.13 = 828.02/x
  3. Step 3: Cross multiply
    1,160.17x = 1,603.13 × 828.02
  4. Step 4: Simplify right side
    1,160.17x = 1,327,423.57
  5. Step 5: Solve for x
    x = 1,327,423.57/1,160.17
  6. Step 6: Final answer
    x = 1,144.17

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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.