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Finding the Fourth Proportional to 530.44, 798.91 and 403.08

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Solution

The fourth proportional to 530.44, 798.91 and 403.08 is: 607.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.44 : 798.91 = 403.08 : x
  2. Step 2: Convert to fraction form
    530.44/798.91 = 403.08/x
  3. Step 3: Cross multiply
    530.44x = 798.91 × 403.08
  4. Step 4: Simplify right side
    530.44x = 322,024.64
  5. Step 5: Solve for x
    x = 322,024.64/530.44
  6. Step 6: Final answer
    x = 607.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.