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Finding the Fourth Proportional to 430.85, 594.65 and 256.16

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Solution

The fourth proportional to 430.85, 594.65 and 256.16 is: 353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.85 : 594.65 = 256.16 : x
  2. Step 2: Convert to fraction form
    430.85/594.65 = 256.16/x
  3. Step 3: Cross multiply
    430.85x = 594.65 × 256.16
  4. Step 4: Simplify right side
    430.85x = 152,323.21
  5. Step 5: Solve for x
    x = 152,323.21/430.85
  6. Step 6: Final answer
    x = 353.55

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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.