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Finding the Fourth Proportional to 289.04, 432.70 and 282.86

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Solution

The fourth proportional to 289.04, 432.70 and 282.86 is: 423.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.04 : 432.70 = 282.86 : x
  2. Step 2: Convert to fraction form
    289.04/432.70 = 282.86/x
  3. Step 3: Cross multiply
    289.04x = 432.70 × 282.86
  4. Step 4: Simplify right side
    289.04x = 122,393.52
  5. Step 5: Solve for x
    x = 122,393.52/289.04
  6. Step 6: Final answer
    x = 423.45

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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.