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Finding the Fourth Proportional to 487.04, 730.20 and 435.20

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Solution

The fourth proportional to 487.04, 730.20 and 435.20 is: 652.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.04 : 730.20 = 435.20 : x
  2. Step 2: Convert to fraction form
    487.04/730.20 = 435.20/x
  3. Step 3: Cross multiply
    487.04x = 730.20 × 435.20
  4. Step 4: Simplify right side
    487.04x = 317,783.04
  5. Step 5: Solve for x
    x = 317,783.04/487.04
  6. Step 6: Final answer
    x = 652.48

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Double scale
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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.