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Finding the Fourth Proportional to 340.29, 510.50 and 203.40

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Solution

The fourth proportional to 340.29, 510.50 and 203.40 is: 305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.29 : 510.50 = 203.40 : x
  2. Step 2: Convert to fraction form
    340.29/510.50 = 203.40/x
  3. Step 3: Cross multiply
    340.29x = 510.50 × 203.40
  4. Step 4: Simplify right side
    340.29x = 103,836.21
  5. Step 5: Solve for x
    x = 103,836.21/340.29
  6. Step 6: Final answer
    x = 305.14

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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.