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Finding the Fourth Proportional to 371.50, 510.93 and 297.70

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Solution

The fourth proportional to 371.50, 510.93 and 297.70 is: 409.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.50 : 510.93 = 297.70 : x
  2. Step 2: Convert to fraction form
    371.50/510.93 = 297.70/x
  3. Step 3: Cross multiply
    371.50x = 510.93 × 297.70
  4. Step 4: Simplify right side
    371.50x = 152,102.58
  5. Step 5: Solve for x
    x = 152,102.58/371.50
  6. Step 6: Final answer
    x = 409.43

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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.