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Finding the Fourth Proportional to 435.02, 652.58 and 289.72

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Solution

The fourth proportional to 435.02, 652.58 and 289.72 is: 434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.02 : 652.58 = 289.72 : x
  2. Step 2: Convert to fraction form
    435.02/652.58 = 289.72/x
  3. Step 3: Cross multiply
    435.02x = 652.58 × 289.72
  4. Step 4: Simplify right side
    435.02x = 189,065.48
  5. Step 5: Solve for x
    x = 189,065.48/435.02
  6. Step 6: Final answer
    x = 434.61

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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.