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Finding the Fourth Proportional to 529.11, 730.01 and 319.19

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Solution

The fourth proportional to 529.11, 730.01 and 319.19 is: 440.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.11 : 730.01 = 319.19 : x
  2. Step 2: Convert to fraction form
    529.11/730.01 = 319.19/x
  3. Step 3: Cross multiply
    529.11x = 730.01 × 319.19
  4. Step 4: Simplify right side
    529.11x = 233,009.04
  5. Step 5: Solve for x
    x = 233,009.04/529.11
  6. Step 6: Final answer
    x = 440.38

Related Problems

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Double scale
Find fourth proportional to 530.11, 731.39 and 320.19
Similar ratio
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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.