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Finding the Fourth Proportional to 1,065.16, 1,469.70 and 599.40

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Solution

The fourth proportional to 1,065.16, 1,469.70 and 599.40 is: 827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.16 : 1,469.70 = 599.40 : x
  2. Step 2: Convert to fraction form
    1,065.16/1,469.70 = 599.40/x
  3. Step 3: Cross multiply
    1,065.16x = 1,469.70 × 599.40
  4. Step 4: Simplify right side
    1,065.16x = 880,938.18
  5. Step 5: Solve for x
    x = 880,938.18/1,065.16
  6. Step 6: Final answer
    x = 827.05

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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.