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Finding the Fourth Proportional to 430.03, 645.01 and 235.18

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Solution

The fourth proportional to 430.03, 645.01 and 235.18 is: 352.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.03 : 645.01 = 235.18 : x
  2. Step 2: Convert to fraction form
    430.03/645.01 = 235.18/x
  3. Step 3: Cross multiply
    430.03x = 645.01 × 235.18
  4. Step 4: Simplify right side
    430.03x = 151,693.45
  5. Step 5: Solve for x
    x = 151,693.45/430.03
  6. Step 6: Final answer
    x = 352.75

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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.