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Finding the Fourth Proportional to 389.57, 537.18 and 295.25

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Solution

The fourth proportional to 389.57, 537.18 and 295.25 is: 407.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.57 : 537.18 = 295.25 : x
  2. Step 2: Convert to fraction form
    389.57/537.18 = 295.25/x
  3. Step 3: Cross multiply
    389.57x = 537.18 × 295.25
  4. Step 4: Simplify right side
    389.57x = 158,602.40
  5. Step 5: Solve for x
    x = 158,602.40/389.57
  6. Step 6: Final answer
    x = 407.13

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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.