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Finding the Fourth Proportional to 1,046.16, 1,568.98 and 430.04

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Solution

The fourth proportional to 1,046.16, 1,568.98 and 430.04 is: 644.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.16 : 1,568.98 = 430.04 : x
  2. Step 2: Convert to fraction form
    1,046.16/1,568.98 = 430.04/x
  3. Step 3: Cross multiply
    1,046.16x = 1,568.98 × 430.04
  4. Step 4: Simplify right side
    1,046.16x = 674,714.16
  5. Step 5: Solve for x
    x = 674,714.16/1,046.16
  6. Step 6: Final answer
    x = 644.94

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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.