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Finding the Fourth Proportional to 508.40, 700.92 and 430.64

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Solution

The fourth proportional to 508.40, 700.92 and 430.64 is: 593.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.40 : 700.92 = 430.64 : x
  2. Step 2: Convert to fraction form
    508.40/700.92 = 430.64/x
  3. Step 3: Cross multiply
    508.40x = 700.92 × 430.64
  4. Step 4: Simplify right side
    508.40x = 301,844.19
  5. Step 5: Solve for x
    x = 301,844.19/508.40
  6. Step 6: Final answer
    x = 593.71

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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.