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Finding the Fourth Proportional to 457.80, 631.04 and 359.39

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Solution

The fourth proportional to 457.80, 631.04 and 359.39 is: 495.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.80 : 631.04 = 359.39 : x
  2. Step 2: Convert to fraction form
    457.80/631.04 = 359.39/x
  3. Step 3: Cross multiply
    457.80x = 631.04 × 359.39
  4. Step 4: Simplify right side
    457.80x = 226,784.51
  5. Step 5: Solve for x
    x = 226,784.51/457.80
  6. Step 6: Final answer
    x = 495.38

Related Problems

Find fourth proportional to 228.90, 315.52 and 179.69
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Double scale
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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.