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Finding the Fourth Proportional to 606.90, 837.60 and 410.40

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Solution

The fourth proportional to 606.90, 837.60 and 410.40 is: 566.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.90 : 837.60 = 410.40 : x
  2. Step 2: Convert to fraction form
    606.90/837.60 = 410.40/x
  3. Step 3: Cross multiply
    606.90x = 837.60 × 410.40
  4. Step 4: Simplify right side
    606.90x = 343,751.04
  5. Step 5: Solve for x
    x = 343,751.04/606.90
  6. Step 6: Final answer
    x = 566.40

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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.