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Finding the Fourth Proportional to 430.79, 594.16 and 290.69

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Solution

The fourth proportional to 430.79, 594.16 and 290.69 is: 400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.79 : 594.16 = 290.69 : x
  2. Step 2: Convert to fraction form
    430.79/594.16 = 290.69/x
  3. Step 3: Cross multiply
    430.79x = 594.16 × 290.69
  4. Step 4: Simplify right side
    430.79x = 172,712.67
  5. Step 5: Solve for x
    x = 172,712.67/430.79
  6. Step 6: Final answer
    x = 400.93

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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.