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Finding the Fourth Proportional to 586.56, 809.56 and 353.69

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Solution

The fourth proportional to 586.56, 809.56 and 353.69 is: 488.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.56 : 809.56 = 353.69 : x
  2. Step 2: Convert to fraction form
    586.56/809.56 = 353.69/x
  3. Step 3: Cross multiply
    586.56x = 809.56 × 353.69
  4. Step 4: Simplify right side
    586.56x = 286,333.28
  5. Step 5: Solve for x
    x = 286,333.28/586.56
  6. Step 6: Final answer
    x = 488.16

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.