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Finding the Fourth Proportional to 554.76, 763.86 and 475.47

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Solution

The fourth proportional to 554.76, 763.86 and 475.47 is: 654.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.76 : 763.86 = 475.47 : x
  2. Step 2: Convert to fraction form
    554.76/763.86 = 475.47/x
  3. Step 3: Cross multiply
    554.76x = 763.86 × 475.47
  4. Step 4: Simplify right side
    554.76x = 363,192.51
  5. Step 5: Solve for x
    x = 363,192.51/554.76
  6. Step 6: Final answer
    x = 654.68

Related Problems

Find fourth proportional to 277.38, 381.93 and 237.74
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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.