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Finding the Fourth Proportional to 905.04, 1,358.02 and 417.54

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Solution

The fourth proportional to 905.04, 1,358.02 and 417.54 is: 626.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.04 : 1,358.02 = 417.54 : x
  2. Step 2: Convert to fraction form
    905.04/1,358.02 = 417.54/x
  3. Step 3: Cross multiply
    905.04x = 1,358.02 × 417.54
  4. Step 4: Simplify right side
    905.04x = 567,027.67
  5. Step 5: Solve for x
    x = 567,027.67/905.04
  6. Step 6: Final answer
    x = 626.52

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Double scale
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1.5x scale

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.