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Finding the Fourth Proportional to 555.76, 829.07 and 491.62

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Solution

The fourth proportional to 555.76, 829.07 and 491.62 is: 733.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.76 : 829.07 = 491.62 : x
  2. Step 2: Convert to fraction form
    555.76/829.07 = 491.62/x
  3. Step 3: Cross multiply
    555.76x = 829.07 × 491.62
  4. Step 4: Simplify right side
    555.76x = 407,587.39
  5. Step 5: Solve for x
    x = 407,587.39/555.76
  6. Step 6: Final answer
    x = 733.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.