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Finding the Fourth Proportional to 530.63, 731.79 and 383.01

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Solution

The fourth proportional to 530.63, 731.79 and 383.01 is: 528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.63 : 731.79 = 383.01 : x
  2. Step 2: Convert to fraction form
    530.63/731.79 = 383.01/x
  3. Step 3: Cross multiply
    530.63x = 731.79 × 383.01
  4. Step 4: Simplify right side
    530.63x = 280,282.99
  5. Step 5: Solve for x
    x = 280,282.99/530.63
  6. Step 6: Final answer
    x = 528.21

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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.