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Finding the Fourth Proportional to 583.16, 873.45 and 290.21

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Solution

The fourth proportional to 583.16, 873.45 and 290.21 is: 434.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.16 : 873.45 = 290.21 : x
  2. Step 2: Convert to fraction form
    583.16/873.45 = 290.21/x
  3. Step 3: Cross multiply
    583.16x = 873.45 × 290.21
  4. Step 4: Simplify right side
    583.16x = 253,479.56
  5. Step 5: Solve for x
    x = 253,479.56/583.16
  6. Step 6: Final answer
    x = 434.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.