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Finding the Fourth Proportional to 507.36, 699.66 and 383.02

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Solution

The fourth proportional to 507.36, 699.66 and 383.02 is: 528.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.36 : 699.66 = 383.02 : x
  2. Step 2: Convert to fraction form
    507.36/699.66 = 383.02/x
  3. Step 3: Cross multiply
    507.36x = 699.66 × 383.02
  4. Step 4: Simplify right side
    507.36x = 267,983.77
  5. Step 5: Solve for x
    x = 267,983.77/507.36
  6. Step 6: Final answer
    x = 528.19

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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.