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Finding the Fourth Proportional to 670.10, 1,004.32 and 304.52

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Solution

The fourth proportional to 670.10, 1,004.32 and 304.52 is: 456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.10 : 1,004.32 = 304.52 : x
  2. Step 2: Convert to fraction form
    670.10/1,004.32 = 304.52/x
  3. Step 3: Cross multiply
    670.10x = 1,004.32 × 304.52
  4. Step 4: Simplify right side
    670.10x = 305,835.53
  5. Step 5: Solve for x
    x = 305,835.53/670.10
  6. Step 6: Final answer
    x = 456.40

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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.