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Finding the Fourth Proportional to 958.04, 1,434.29 and 561.52

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Solution

The fourth proportional to 958.04, 1,434.29 and 561.52 is: 840.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.04 : 1,434.29 = 561.52 : x
  2. Step 2: Convert to fraction form
    958.04/1,434.29 = 561.52/x
  3. Step 3: Cross multiply
    958.04x = 1,434.29 × 561.52
  4. Step 4: Simplify right side
    958.04x = 805,384.66
  5. Step 5: Solve for x
    x = 805,384.66/958.04
  6. Step 6: Final answer
    x = 840.66

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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.