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Finding the Fourth Proportional to 656.37, 906.48 and 587.70

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Solution

The fourth proportional to 656.37, 906.48 and 587.70 is: 811.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.37 : 906.48 = 587.70 : x
  2. Step 2: Convert to fraction form
    656.37/906.48 = 587.70/x
  3. Step 3: Cross multiply
    656.37x = 906.48 × 587.70
  4. Step 4: Simplify right side
    656.37x = 532,738.30
  5. Step 5: Solve for x
    x = 532,738.30/656.37
  6. Step 6: Final answer
    x = 811.64

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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.