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Finding the Fourth Proportional to 459.19, 633.40 and 403.93

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Solution

The fourth proportional to 459.19, 633.40 and 403.93 is: 557.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.19 : 633.40 = 403.93 : x
  2. Step 2: Convert to fraction form
    459.19/633.40 = 403.93/x
  3. Step 3: Cross multiply
    459.19x = 633.40 × 403.93
  4. Step 4: Simplify right side
    459.19x = 255,849.26
  5. Step 5: Solve for x
    x = 255,849.26/459.19
  6. Step 6: Final answer
    x = 557.18

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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.