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Finding the Fourth Proportional to 551.04, 822.60 and 490.56

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Solution

The fourth proportional to 551.04, 822.60 and 490.56 is: 732.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.04 : 822.60 = 490.56 : x
  2. Step 2: Convert to fraction form
    551.04/822.60 = 490.56/x
  3. Step 3: Cross multiply
    551.04x = 822.60 × 490.56
  4. Step 4: Simplify right side
    551.04x = 403,534.66
  5. Step 5: Solve for x
    x = 403,534.66/551.04
  6. Step 6: Final answer
    x = 732.31

Related Problems

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Half scale
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Double scale
Find fourth proportional to 552.04, 824.09 and 491.56
Similar ratio
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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.