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Finding the Fourth Proportional to 956.04, 1,434.17 and 339.82

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Solution

The fourth proportional to 956.04, 1,434.17 and 339.82 is: 509.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.04 : 1,434.17 = 339.82 : x
  2. Step 2: Convert to fraction form
    956.04/1,434.17 = 339.82/x
  3. Step 3: Cross multiply
    956.04x = 1,434.17 × 339.82
  4. Step 4: Simplify right side
    956.04x = 487,359.65
  5. Step 5: Solve for x
    x = 487,359.65/956.04
  6. Step 6: Final answer
    x = 509.77

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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.