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Finding the Fourth Proportional to 662.76, 915.37 and 441.32

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Solution

The fourth proportional to 662.76, 915.37 and 441.32 is: 609.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.76 : 915.37 = 441.32 : x
  2. Step 2: Convert to fraction form
    662.76/915.37 = 441.32/x
  3. Step 3: Cross multiply
    662.76x = 915.37 × 441.32
  4. Step 4: Simplify right side
    662.76x = 403,965.41
  5. Step 5: Solve for x
    x = 403,965.41/662.76
  6. Step 6: Final answer
    x = 609.52

Related Problems

Find fourth proportional to 331.38, 457.68 and 220.66
Half scale
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Double scale
Find fourth proportional to 663.76, 916.75 and 442.32
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.