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Finding the Fourth Proportional to 587.97, 812.57 and 440.55

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Solution

The fourth proportional to 587.97, 812.57 and 440.55 is: 608.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.97 : 812.57 = 440.55 : x
  2. Step 2: Convert to fraction form
    587.97/812.57 = 440.55/x
  3. Step 3: Cross multiply
    587.97x = 812.57 × 440.55
  4. Step 4: Simplify right side
    587.97x = 357,975.51
  5. Step 5: Solve for x
    x = 357,975.51/587.97
  6. Step 6: Final answer
    x = 608.83

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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.