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Finding the Fourth Proportional to 486.30, 672.04 and 432.30

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Solution

The fourth proportional to 486.30, 672.04 and 432.30 is: 597.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.30 : 672.04 = 432.30 : x
  2. Step 2: Convert to fraction form
    486.30/672.04 = 432.30/x
  3. Step 3: Cross multiply
    486.30x = 672.04 × 432.30
  4. Step 4: Simplify right side
    486.30x = 290,522.89
  5. Step 5: Solve for x
    x = 290,522.89/486.30
  6. Step 6: Final answer
    x = 597.41

Related Problems

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.