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Finding the Fourth Proportional to 459.66, 690.98 and 369.35

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Solution

The fourth proportional to 459.66, 690.98 and 369.35 is: 555.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.66 : 690.98 = 369.35 : x
  2. Step 2: Convert to fraction form
    459.66/690.98 = 369.35/x
  3. Step 3: Cross multiply
    459.66x = 690.98 × 369.35
  4. Step 4: Simplify right side
    459.66x = 255,208.16
  5. Step 5: Solve for x
    x = 255,208.16/459.66
  6. Step 6: Final answer
    x = 555.21

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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.