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Finding the Fourth Proportional to 564.96, 779.40 and 340.76

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Solution

The fourth proportional to 564.96, 779.40 and 340.76 is: 470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.96 : 779.40 = 340.76 : x
  2. Step 2: Convert to fraction form
    564.96/779.40 = 340.76/x
  3. Step 3: Cross multiply
    564.96x = 779.40 × 340.76
  4. Step 4: Simplify right side
    564.96x = 265,588.34
  5. Step 5: Solve for x
    x = 265,588.34/564.96
  6. Step 6: Final answer
    x = 470.10

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Find fourth proportional to 282.48, 389.70 and 170.38
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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.