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Finding the Fourth Proportional to 673.86, 930.18 and 465.12

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Solution

The fourth proportional to 673.86, 930.18 and 465.12 is: 642.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.86 : 930.18 = 465.12 : x
  2. Step 2: Convert to fraction form
    673.86/930.18 = 465.12/x
  3. Step 3: Cross multiply
    673.86x = 930.18 × 465.12
  4. Step 4: Simplify right side
    673.86x = 432,645.32
  5. Step 5: Solve for x
    x = 432,645.32/673.86
  6. Step 6: Final answer
    x = 642.04

Related Problems

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Half scale
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Double scale
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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.