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Finding the Fourth Proportional to 1,052.61, 1,578.91 and 322.16

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Solution

The fourth proportional to 1,052.61, 1,578.91 and 322.16 is: 483.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.61 : 1,578.91 = 322.16 : x
  2. Step 2: Convert to fraction form
    1,052.61/1,578.91 = 322.16/x
  3. Step 3: Cross multiply
    1,052.61x = 1,578.91 × 322.16
  4. Step 4: Simplify right side
    1,052.61x = 508,661.65
  5. Step 5: Solve for x
    x = 508,661.65/1,052.61
  6. Step 6: Final answer
    x = 483.24

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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.