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Finding the Fourth Proportional to 289.77, 434.84 and 152.77

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Solution

The fourth proportional to 289.77, 434.84 and 152.77 is: 229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.77 : 434.84 = 152.77 : x
  2. Step 2: Convert to fraction form
    289.77/434.84 = 152.77/x
  3. Step 3: Cross multiply
    289.77x = 434.84 × 152.77
  4. Step 4: Simplify right side
    289.77x = 66,429.74
  5. Step 5: Solve for x
    x = 66,429.74/289.77
  6. Step 6: Final answer
    x = 229.25

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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.