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Finding the Fourth Proportional to 430.56, 593.40 and 356.48

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Solution

The fourth proportional to 430.56, 593.40 and 356.48 is: 491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.56 : 593.40 = 356.48 : x
  2. Step 2: Convert to fraction form
    430.56/593.40 = 356.48/x
  3. Step 3: Cross multiply
    430.56x = 593.40 × 356.48
  4. Step 4: Simplify right side
    430.56x = 211,535.23
  5. Step 5: Solve for x
    x = 211,535.23/430.56
  6. Step 6: Final answer
    x = 491.30

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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.