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Finding the Fourth Proportional to 555.19, 831.03 and 310.98

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Solution

The fourth proportional to 555.19, 831.03 and 310.98 is: 465.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.19 : 831.03 = 310.98 : x
  2. Step 2: Convert to fraction form
    555.19/831.03 = 310.98/x
  3. Step 3: Cross multiply
    555.19x = 831.03 × 310.98
  4. Step 4: Simplify right side
    555.19x = 258,433.71
  5. Step 5: Solve for x
    x = 258,433.71/555.19
  6. Step 6: Final answer
    x = 465.49

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.