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Finding the Fourth Proportional to 302.10, 452.43 and 260.70

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Solution

The fourth proportional to 302.10, 452.43 and 260.70 is: 390.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.10 : 452.43 = 260.70 : x
  2. Step 2: Convert to fraction form
    302.10/452.43 = 260.70/x
  3. Step 3: Cross multiply
    302.10x = 452.43 × 260.70
  4. Step 4: Simplify right side
    302.10x = 117,948.50
  5. Step 5: Solve for x
    x = 117,948.50/302.10
  6. Step 6: Final answer
    x = 390.43

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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.