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Finding the Fourth Proportional to 566.77, 782.21 and 318.10

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Solution

The fourth proportional to 566.77, 782.21 and 318.10 is: 439.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.77 : 782.21 = 318.10 : x
  2. Step 2: Convert to fraction form
    566.77/782.21 = 318.10/x
  3. Step 3: Cross multiply
    566.77x = 782.21 × 318.10
  4. Step 4: Simplify right side
    566.77x = 248,815.50
  5. Step 5: Solve for x
    x = 248,815.50/566.77
  6. Step 6: Final answer
    x = 439.01

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Find fourth proportional to 283.38, 391.10 and 159.05
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Double scale
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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.