Home / 288.54-432-207

Finding the Fourth Proportional to 288.54, 432 and 207

Calculator

Solution

The fourth proportional to 288.54, 432 and 207 is: 309.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.54 : 432 = 207 : x
  2. Step 2: Convert to fraction form
    288.54/432 = 207/x
  3. Step 3: Cross multiply
    288.54x = 432 × 207
  4. Step 4: Simplify right side
    288.54x = 89,424
  5. Step 5: Solve for x
    x = 89,424/288.54
  6. Step 6: Final answer
    x = 309.92

Related Problems

Find fourth proportional to 144.27, 216 and 103.50
Half scale
Find fourth proportional to 577.08, 864 and 414
Double scale
Find fourth proportional to 289.54, 433.50 and 208
Similar ratio
Find fourth proportional to 432.81, 648 and 310.50
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.